期刊
CLASSICAL AND QUANTUM GRAVITY
卷 36, 期 20, 页码 -出版社
IOP PUBLISHING LTD
DOI: 10.1088/1361-6382/ab436f
关键词
gravity; quantum gravity; traversable; black holes; wormholes
类别
资金
- NSF [PHY1801805]
- STFC [PHY-1504541, ST/P000681/1]
- BIS National E-infrastructure capital Grant [ST/J005673/1]
- STFC capital Grant [ST/H008586/1]
- STFC DiRAC Operations Grant [ST/K00333X/1]
- STFC [ST/M007006/1, ST/R001006/1, ST/S002529/1, ST/M007073/1, ST/M006948/1, ST/H008586/1, ST/R001014/1, ST/T001569/1, ST/T001348/1, ST/P000681/1, ST/T001550/1, ST/M007065/1, ST/R001049/1, ST/M007618/1, ST/R000832/1, ST/R00689X/1, ST/P000673/1, ST/T001372/1] Funding Source: UKRI
We argue that one can nucleate a traversable wormhole via a nonperturbative process in quantum gravity. To support this, we construct spacetimes in which there are instantons giving a finite probability for a test cosmic string to break and produce two particles on its ends. One should be able to replace the particles with small black holes with only small changes to the spacetime away from the horizons. The black holes are then created with their horizons identified, so this is an example of nucleating a wormhole. Unlike previous examples where the created black holes accelerate apart, in our case they remain essentially at rest. This is important since wormholes become harder and harder to make traversable as their mouths become widely separated, and since traversability can be destroyed by Unruh radiation. In our case, back-reaction from quantum fields can make the wormhole traversable.
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